Lord Muirshiel married Betty, daughter of Delaval Graham L'Estrange Astley, in 1930. The marriage was childless. She died in June 1974, aged 71. Lord Muirshiel remained a widower until his death in August 1992, aged 86. The viscountcy died with him.[2] He is buried alongside a number of family members including the Barons Maclay in the Mount Zion Church graveyard in Quarrier's Village near Kilmacolm in his former West Renfrewshire constituency.[citation needed]